Socket code:
client file:
#define PORT 8080
int main(int argc, char const *argv[])
{
int sock = 0, valread;
struct sockaddr_in serv_addr;
char *hello = "Hello from client";
char buffer[1024] = {0};
if ((sock = socket(AF_INET, SOCK_STREAM, 0)) < 0)
{
printf("\n Socket creation error \n");
return -1;
}
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(PORT);
// Convert IPv4 and IPv6 addresses from text to binary form
if(inet_pton(AF_INET, "0.0.0.0", &serv_addr.sin_addr)<=0)
{
printf("\nInvalid address/ Address not supported \n");
return -1;
}
while (connect(sock, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) < 0)
{
printf("\nConnection Failed. Reconnecting ... \n");
sleep(2);
}
while(1){
send(sock , hello , strlen(hello) , 0 );
printf("Hello message sent\n");
sleep(1);
}
return 0;
}
server file:
#define PORT 8080
int main(int argc, char const *argv)
{
int server_fd, new_socket, valread;
struct sockaddr_in address;
int opt = 1;
int addrlen = sizeof(address);
char buffer[1024] = {0};
char *hello = “Hello from server”;
// Creating socket file descriptor
if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0)
{
perror(“socket failed”);
exit(EXIT_FAILURE);
}
// Forcefully attaching socket to the port 8080
if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT,
&opt, sizeof(opt)))
{
perror(“setsockopt”);
exit(EXIT_FAILURE);
}
address.sin_family = AF_INET;
address.sin_addr.s_addr = INADDR_ANY;
address.sin_port = htons( PORT );
// Forcefully attaching socket to the port 8080
if (bind(server_fd, (struct sockaddr *)&address,
sizeof(address))<0)
{
perror(“bind failed”);
exit(EXIT_FAILURE);
}
if (listen(server_fd, 3) < 0)
{
perror(“listen”);
exit(EXIT_FAILURE);
}
if ((new_socket = accept(server_fd, (struct sockaddr )&address,
(socklen_t)&addrlen))<0)
{
perror(“accept”);
exit(EXIT_FAILURE);
}
while(1){
valread = read( new_socket , buffer, 1024);
printf(“%s\n”,buffer );
sleep(1);
}
return 0;
}
